Just for reference, the following start to the if condition is a bit hefty:
HTML Code:
<if condition="$post[usergroupid]!=6 AND $post[usergroupid]!=5 AND $post[usergroupid]!=7 AND can_moderate($forum[forumid], '', $bbuserinfo[userid])">
You can use the [high]is_member_of[/high] function in template conditionals:
HTML Code:
<if condition="!is_member_of($post['usergroupid'], array(5,6,7)) AND can_moderate($forum['forumid'], '', $bbuserinfo['userid'])">
Chris